import java.io.*;

public class WhileLoops
{
    static BufferedReader keyboard = new BufferedReader 
           (new InputStreamReader (System.in));

    public static void main (String[] args) throws IOException
    {
        int firstNum, secondNum;
        int i;
        int sum = 0;

        System.out.print ("Please enter the first integer: ");
        firstNum = Integer.parseInt (keyboard.readLine());

        //Ask user for second number, must be larger than first.
		  
		  
		  //Continue to ask the user until they give you a good one.
        // input validation: make sure firstNum is less than secondNum
        


        // print all the odd numbers between firstNum and secondNum
        System.out.println ("Odd numbers between " + firstNum + " and " +
                            secondNum + ": ");
        //while loop here
		  
		  
		  
        // print the sum of the even numbers between firstNum and secondNum
        System.out.print ("Sum of even numbers between " + firstNum + 
                          " and " + secondNum + ": ");
        //while loop here
		  
		  
		  
        System.out.println (sum);

    }
}